Inventors:
Cheng-I Lin - Cupertino CA, US
Tom Chia - Fountain Valley CA, US
Marie Lin - Cupertino CA, US
Michael Coyer - Dumore PA, US
Assignee:
Lin-Zhi International - Sunnyvale CA
International Classification:
G01N 33/543, G01N 33/537
Abstract:
The present invention discloses methods and kits for retrieving a cannabinoid from an oral fluid collection device having adsorbed the cannabinoid and to prepare an oral fluid specimen for the determination of Δ-tetrahydrocaninabinol (Δ-THC) concentration qualitatively or quantitatively by an enzyme immunoassay. The methods and kits are particularly useful in preserving the Δ-THC quantitatively from oral fluid samples during the process of collection and preparation.